Hi everyone im in need of all you advice can any one tell me when and why do we need to treat fresh air (pahu) and at what temperature do i have to supply the air to the ahu
Sometimes you have 100% fresh air installations. In this case you have to treat it otherwise the temperature and humidity will be out of range.
There are other cases in wich you may want to treat fresh air with a dedicated unit so the indoor units or other air handling units be designed only to handle room loads.